{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{4}{c}}
\hline\hline
            &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}&\multicolumn{1}{c}{(3)}&\multicolumn{1}{c}{(4)}\\
            &\multicolumn{1}{c}{l\_households\_house}&\multicolumn{1}{c}{dpopdens50}&\multicolumn{1}{c}{dpopdens50}&\multicolumn{1}{c}{dpopdens50}\\
\hline
cbd\_dist    &      0.0004\sym{c}&                   &                   &                   \\
            &    (0.0002)       &                   &                   &                   \\
[1em]
dpopdens45  &                   &     -0.7267\sym{a}&     -0.8924\sym{a}&     -0.9397\sym{a}\\
            &                   &    (0.0273)       &    (0.0511)       &    (0.0459)       \\
[1em]
households\_house&                   &      0.0023       &      0.0026\sym{b}&      0.0019       \\
            &                   &    (0.0014)       &    (0.0012)       &    (0.0028)       \\
\hline
\(N\)       &          22       &         174       &         174       &         158       \\
\(R^{2}\)   &       0.234       &       0.815       &       0.866       &       0.874       \\
\hline\hline
\multicolumn{5}{l}{\footnotesize Standard errors in parentheses}\\
\multicolumn{5}{l}{\footnotesize \sym{c} \(p<0.1\), \sym{b} \(p<0.05\), \sym{a} \(p<0.01\)}\\
\end{tabular}
}
